Hi rodrigovim
You can use the change event for column A in this example
Copy the code in the sheet module and after you enter the ISBN book number in the cell it add the 1
Private Sub Worksheet_Change(ByVal Target As Range)
If Target.Column = 1 Then
Application.EnableEvents = False
Target.Value = Target.Value & 1
Application.EnableEvents = True
End If
End Sub

Signature
Regards Ron de Bruin
http://www.rondebruin.nl/tips.htm
> Hi,
>
> How can insert or add a number (always the same e. 1) at right side of
> 70.000 ISBN book numbers automatically?
>
> Public Librarian Ask to you...
rodrigovim - 24 Jan 2007 15:58 GMT
Many Thank Ron
but,
The 70.000 ISBNs was captured from bookshelves by Bar-code handy
terminal to Data harvesting software and exported to Excel,...and now
we need to add the number 1 to all numbers, as validation digit to our
inventory process.
> Hi rodrigovim
>
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>
> > Public Librarian Ask to you...- Hide quoted text -- Show quoted text -
Ron de Bruin - 24 Jan 2007 16:04 GMT
Then use this for column A
Sub test()
Dim cell As Range
For Each cell In Columns("A").SpecialCells(xlCellTypeConstants)
cell.Value = cell.Value & 1
Next cell
End Sub

Signature
Regards Ron de Bruin
http://www.rondebruin.nl/tips.htm
> Many Thank Ron
>
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>>
>> > Public Librarian Ask to you...- Hide quoted text -- Show quoted text -